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