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