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