I've just been displaying it as such, with color to represent high / low rated averaged attributes by group (scale of 1-5). But I have to think there must be a better way! At least more creative... it would be nice to be able to get a quicker read on the deviations.
In my opinion, the very best instructions and ideas regarding survey data in Tableau are from Tableau Zen Master Steve Wexler. He has a great blog, and I successfully created some stellar survey dashboards by following his instructions step by step.