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