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