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