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