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