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