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