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