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