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)(17,18,23,26,22,27,21,31)(19,20,25,30,29,24,28,32)(1,3,6,2)(4,7,5,8)(17,19,21,28,22,29,23,25)(18,24,31,30,27,20,26,32)(1,4,6,5)(2,7,3,8)(10,13)(14,16)(17,20,22,24)(18,25,27,28)(19,26,29,31)(21,32,23,30)(1,5,6,4)(2,7,3,8)(17,21,22,23)(18,26,27,31)(19,28,29,25)(20,30,24,32)(9,11,12,15)(10,14,13,16)(19,29)(20,24)(25,28)(30,32)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.