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