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