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