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