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