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