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