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