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