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