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