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