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