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