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