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