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