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