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