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