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