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