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