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