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