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