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