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