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