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