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