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