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