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