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