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