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