One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(11,15)(14,16)(19,23)(21,24)(25,26,29,28)(27,31,32,30)(2,4)(6,7)(10,13)(14,16)(17,18,20,22)(19,21,23,24)(1,3,5,8)(2,6,4,7)(9,10)(11,14)(12,13)(15,16)(17,18)(19,21)(20,22)(23,24)(25,27,29,32)(26,30,28,31)(1,3)(2,6)(4,7)(5,8)(17,19)(18,21)(20,23)(22,24)(25,28,29,26)(27,30,32,31)(1,4,5,2)(3,7,8,6)(9,11)(10,14)(12,15)(13,16)(17,19)(18,21)(20,23)(22,24)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.