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