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