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