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