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