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