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)(11,15)(12,14)(13,16)(17,18,24,29)(19,25,20,31)(21,26,30,32)(22,28,23,27)(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,24,20)(18,25,29,31)(21,23,30,22)(26,27,32,28)(10,14)(11,16)(17,20,23,30,24,19,22,21)(18,26,28,25,29,32,27,31)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,23,20,24,30,22,19)(18,25,28,32,29,31,27,26)(2,5)(6,8)(10,14)(13,15) 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.