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