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