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