One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(9,10)(11,12)(13,15)(14,16)(17,18)(19,27)(20,23)(21,26)(22,25)(24,30)(28,31)(29,32)(2,5)(6,7)(10,15)(11,16)(18,23)(19,28)(21,22)(24,27)(29,30)(31,32) involution — undirected(9,11,12,10,13,16,14,15)(17,19,22,28,20,29,21,30)(18,24,26,32,23,31,25,27)(1,3,4,8)(2,6,5,7)(9,12,13,14)(10,16,15,11)(18,23)(19,29)(25,26)(28,30)A 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.