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