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