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