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