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)(11,18)(12,13)(17,22)(19,23)(20,21) involution — undirected(2,6)(3,4)(7,8)(9,10)(11,19)(12,22)(13,15)(14,17)(16,21)(18,24)(20,23) involution — undirected(9,11)(10,16)(12,18)(13,21)(14,20)(15,23)(17,24)(19,22) involution — undirected(1,3,5,4)(2,7,8,6)(10,17)(11,20)(15,22)(18,21)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.