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