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