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