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