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)(17,18,22,23)(19,24,25,20)(21,26,30,31)(27,29,32,28)(1,2,5,6)(3,7,4,8)(17,19,22,25)(18,24,23,20)(21,29,30,28)(26,32,31,27)(1,3,5,4)(2,7,6,8)(10,14)(15,16)(17,20,23,19,22,24,18,25)(21,28,31,27,30,29,26,32)(1,4,5,3)(2,8,6,7)(9,11,13,12)(10,15,14,16)(21,30)(26,31)(27,32)(28,29)(2,6)(7,8)(9,12,13,11)(10,16,14,15)(17,21,18,26,22,30,23,31)(19,27,20,28,25,32,24,29)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.