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