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