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