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