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