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