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