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