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)(14,17)(15,19)(21,22)(23,28)(24,30)(25,29)(26,27)(31,35)(32,36)(33,34)(5,6,8,10)(7,11,12,9)(13,14,16,17)(15,20,19,18)(22,27)(23,30)(25,33)(32,35)(1,2,4,3)(5,6,8,10)(7,9,12,11)(13,15,16,19)(14,18,17,20)(21,23,26,30)(22,28,27,24)(25,31,33,36)(29,35,34,32)(1,3,4,2)(5,6)(7,9)(8,10)(11,12)(13,15)(14,18)(16,19)(17,20)(21,24,26,28)(22,23,27,30)(25,32,33,35)(29,31,34,36)(5,7)(6,9)(8,12)(10,11)(13,14)(15,18)(16,17)(19,20)(21,25)(22,29)(23,31)(24,32)(26,33)(27,34)(28,35)(30,36) 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.