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