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