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