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