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