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