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