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