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