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