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