Those diagrams are highly simplified. The lines they show are in about the right places, but there are no blocks or other rigging fittings. I can easily understand why, if you've got even a little experience with rigging ship models, you'd want to go at least a bit beyond what they offer.
The plans Powder Monkey found look pretty reasonable to me. They're awfully small, though, and try to cram a great deal of information into a couple of diagrams.
I haven't seen either of the two Revell kits in years. The larger of the two, oddly enough, was a "quick-build" version with grossly simplified rigging; the smaller was considerably more complicated. The leads of the lines were shown reasonably accurately in the instructions, though the overall rigging plan was simplified quite a bit to accommodate such things as plastic-coated-thread "shrouds and ratlines" and blocks recycled from the old Cutty Sark kit. On the basis of the photos, I think this Heller kit is a reboxing of the smaller Revell one - with most of the rigging fittings, such as the blocks, omitted. If I'm correct, it's one of the best plastic sailing ship kits ever produced.
I can recommend three excellent published sources:
1. The Mayflower and Other Colonial Vessels, by William A. Baker. Mr. Baker, a longtime professor of naval architecture at the Massachusetts Institute of Technology, was the designer of the replica ship Mayflower II, which crossed the Atlantic in (I think) 1956 and is still moored at Plymouth as a museum ship. The book includes a set of plans for the Mayflower II, including the rigging. The two Revell kits are in fact excellent, accurate scale models of the Mayflower II.
2. The Rigging of Ships in the Days of the Spritsail Topmast, 1600-1720, by R.C. Anderson. This is the standard reference on the general subject of seventeenth-century rigging. From the modeler's standpoint, its great virtue is that it's easily obtainable; Model Expo sells a cheap paperback edition for about $12.00, and even cheaper used copies can be found on the web. Everything you need to rig a model of the Mayflower is in that book somewhere, though it also contains a lot of material that's only relevant to larger ships. A very similar book, also by Dr. Anderson, is called simply Seventeenth-Century Rigging. It's a slightly revised version that deletes the references to non-English practice; for a Mayflower project it would be fine.
3. The Ship Susan Constant, by Brian Lavery. This is a volume in the well-known Anatomy of the Ship series, from the Conway Maritime Press. The Susan Constant, of course, was the largest of the three ships that brought the first English settlers to Jamestown in 1607. Given the extreme paucity of information about such ships, the information about the rigging in Mr. Lavery's book can be taken as just as valid for the Mayflower. Of the three books, I think this one might be the easiest to use for model-building purposes. There are lots of rigging diagrams, and the lead of each line is described verbally - and it wouldn't require wading through a great deal of not-directly-relevant information, as either of the two Anderson books would.
Hope that helps a little. Good luck.