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