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