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