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