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