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