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