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