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