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