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