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