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