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