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