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