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