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