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