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