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