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