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