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