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