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)(11,12)(13,14)(15,16)(18,23)(21,24)(27,31)(29,32)(2,6)(3,8)(9,11)(10,15)(12,13)(14,16)(17,18)(19,21)(20,24)(22,23)(25,26,28,30)(27,29,31,32)(2,6)(4,7)(10,13)(11,16)(17,19,22,20)(18,24,23,21)(25,26)(27,29)(28,30)(31,32)(1,3,5,8)(2,7,6,4)(9,12)(10,11)(13,16)(14,15)(17,20,22,19)(18,24,23,21)(25,27,28,31)(26,29,30,32)(1,4,5,7)(2,8,6,3)(9,13,14,10)(11,12,16,15)(17,21,22,24)(18,19,23,20)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.