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