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