One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(6,12)(7,17)(8,22)(9,10)(13,18)(15,16)(20,21)(23,24)(26,29)(27,35)(31,33)(32,36) involution — undirected(5,6)(7,18)(8,14)(9,15)(10,12)(11,16)(13,21)(17,28)(19,32)(20,25)(22,29)(23,26)(24,30)(27,34)(31,36)(33,35) involution — undirected(2,4)(5,7,9,20,11,21,10,17)(6,13,12,25,16,18,15,28)(8,19,22,33,24,34,23,31)(14,27,26,35,30,32,29,36)(5,8,9,22,11,24,10,23)(6,14,15,29,16,30,12,26)(7,19,20,33,21,34,17,31)(13,27,28,36,18,32,25,35)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.