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