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