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