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