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