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