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