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