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