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