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