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