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