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