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