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