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