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