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