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