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