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