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