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