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