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