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