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