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