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