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