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