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