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