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