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