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