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