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