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)(30,32)(2,3)(6,7)(9,10,13,12)(11,16,15,14)(18,23)(19,20)(26,29)(30,32)(4,8)(6,7)(10,12)(14,16)(17,19,22,20)(18,24,23,21)(25,26)(27,30)(28,29)(31,32)(1,3,5,2)(4,7,8,6)(9,11,13,15)(10,14,12,16)(17,20,22,19)(18,24,23,21)(25,27)(26,30)(28,31)(29,32)(1,4,5,8)(2,6,3,7)(9,12,13,10)(11,16,15,14)(17,21,22,24)(18,19,23,20)(25,27)(26,30)(28,31)(29,32)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.