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