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