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