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