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