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