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