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