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