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