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