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