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