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