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