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