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