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