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