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