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