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