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