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