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