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