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