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