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