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