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