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