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