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