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