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