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