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