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