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)(17,18,21,25,22,24,20,26)(19,27,28,32,30,31,29,23)(1,2)(3,10)(4,13)(5,7)(6,11)(8,15)(9,14)(12,16)(17,19,20,29,22,30,21,28)(18,23,25,27,24,32,26,31)(1,3)(2,6)(4,14)(5,12)(7,9)(8,16)(10,13)(11,15)(18,24)(19,28)(20,21)(23,31)(27,32)(29,30) 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.