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