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