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