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