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