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