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