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