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