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)(11,16)(12,22)(13,17)(14,19)(15,20)(18,23)(21,24) involution — undirected(2,6)(7,8)(9,11,14,20)(10,15,19,16)(12,23,21,13)(17,24,18,22)(1,3,5,4)(2,7,6,8)(9,12,13,11,14,21,23,20)(10,16,18,22,19,15,17,24)(10,17,19,18)(15,22,16,24)(1,4,5,3)(2,7,6,8)(9,13,14,23)(10,18,19,17)(11,12,20,21)(15,22,16,24)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.