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