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)(20,22)(21,24)(25,26,30,29)(27,28,32,31)(1,2,4,6)(3,7,8,5)(9,11,14,16)(10,15,12,13)(17,19)(18,21)(20,24)(22,23)(25,27,30,32)(26,31,29,28)(3,8)(5,7)(9,10,14,12)(11,13,16,15)(17,18,20,22)(19,21,24,23)(25,28,30,31)(26,27,29,32)(1,2)(3,7)(4,6)(5,8)(9,12,14,10)(11,15,16,13)(17,19)(18,21)(20,24)(22,23)(25,29,30,26)(27,28,32,31)(1,3,4,8)(2,5,6,7)(9,13,14,15)(10,11,12,16)(17,18)(19,23)(20,22)(21,24)(25,28)(26,32)(27,29)(30,31)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.