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)(11,13)(12,14)(15,16)(17,18,22,25)(19,21,27,23)(20,28,30,24)(26,31,32,29)(1,3,5,2)(4,7,8,6)(9,11,12,15)(10,13,14,16)(17,19,22,27)(18,21,25,23)(20,24,30,28)(26,31,32,29)(1,4,5,8)(2,6,3,7)(10,14)(13,16)(17,20)(18,24)(19,26)(21,29)(22,30)(23,31)(25,28)(27,32)(2,3)(6,7)(10,14)(13,16)(17,21,22,23)(18,19,25,27)(20,29,30,31)(24,26,28,32)(18,25)(19,27)(24,28)(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.