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)(19,28,20,24)(21,30,27,23)(25,29,32,31)(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19)(18,24)(20,22)(21,32)(23,31)(25,27)(26,28)(29,30) involution — undirected(10,14)(11,16)(17,20,30,29,22,19,23,31)(18,25,21,28,26,32,27,24)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,23,18,22,27,30,26)(19,24,29,32,20,28,31,25)(2,5)(6,8)(10,14)(13,15)(18,26)(21,27)(24,28)(25,32) 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.