We see these seven Gungans in the robes traditionally reserved for the High Council at the opera in episode III. It is not clear whether these seven actually serve as part of the Gungan council, are Gungan representatives to Coruscant, aides, diplomats or something else, but they wear the robes associated with the Gungan High Council Reps, only with slight differences.
Where the episode I outer robes are brown, these are instead more of a red-brown color. Otherwise the cut appears very similar to the episode I robes.

The seven Gungans are seen standing in a group of three right next to where Anakin park, two to the left of the stairs, one going up the stairs and one standing on the stairs talking to a droid. Only those on the stairs are seen up close.