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