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