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