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