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