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