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