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