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