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