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