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