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