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