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