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