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