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