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