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