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