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