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