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