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