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