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