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