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