One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(6,8)(9,10,12,14)(11,13,15,16)(17,18)(19,25)(20,28,29,23)(21,24)(22,26)(27,31,32,30)(1,2,4,5)(3,6,7,8)(9,11,12,15)(10,13,14,16)(19,26)(22,25)(27,32)(30,31)(1,3,4,7)(2,6,5,8)(11,15)(13,16)(17,19)(18,22)(20,27)(21,26)(23,30)(24,25)(28,31)(29,32)(2,5)(6,8)(17,20)(18,23)(19,27)(21,29)(22,30)(24,28)(25,31)(26,32) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.