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