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