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