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