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