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