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