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