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