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