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