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