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