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