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