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