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