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