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