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