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