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