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