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