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