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