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