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)(11,15)(12,14)(13,16)(17,18,22,20)(19,23,21,24)(25,26)(27,28)(29,30)(31,32)(1,3,6,5)(2,4,7,8)(9,11,14,16)(10,15,12,13)(17,19,22,21)(18,23,20,24)(26,30)(28,31)(2,7)(4,8)(10,12)(11,16)(17,19,22,21)(18,24,20,23)(25,26,29,30)(27,31,32,28)(1,4,6,8)(2,3,7,5)(9,12,14,10)(11,13,16,15)(17,20,22,18)(19,24,21,23)(25,27)(26,31)(28,30)(29,32)(1,5,6,3)(2,8,7,4)(9,13)(10,11)(12,16)(14,15)(17,21,22,19)(18,24,20,23)(25,28,29,31)(26,27,30,32)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.