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