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