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