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