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