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