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