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