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