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