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