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