Dragon's site has a couple of pics here: http://www.dragonmodelsltd.com/html/6136.htm - though that may well already be on the box
Ideas for diorama...
If you want to show a "construction work in progress" add a few more engineer type figures on the boat or bank, with a Hanomag or similar. Maybe a bossy officer riding on the pontoon telling people off (maybe something has gone wrong?)
For a combat situation, it's a bit tougher because there's only the one pontoon section...
save the dingy and maybe have a night scene of commandos or resistance floating the section away from the bank, or add a load of battle damage (to explain the one section) and have a bemused convoy wondering where else to cross...
hehe just brainstorming, I love all the ideas dioramas throw up