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