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