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