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