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