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