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