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