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