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