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