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