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