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