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)(11,12)(13,16)(14,15)(17,18,20,22)(19,23,24,21)(27,32)(28,30)(1,2)(3,6)(4,5)(7,8)(9,11,14,13)(10,12,15,16)(17,19,20,24)(18,21,22,23)(25,26)(27,28)(29,31)(30,32)(2,5)(6,7)(10,15)(12,16)(17,18,20,22)(19,21,24,23)(25,27,29,32)(26,30,31,28)(1,2)(3,6)(4,5)(7,8)(9,12,14,16)(10,11,15,13)(17,18)(19,21)(20,22)(23,24)(25,27)(26,28)(29,32)(30,31)(1,3)(2,6)(4,8)(5,7)(9,13,14,11)(10,16,15,12)(17,19)(18,21)(20,24)(22,23)(25,28)(26,27)(29,30)(31,32)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.