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