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