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