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