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