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