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