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