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