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