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