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)(13,14,17,16)(15,18,19,20)(21,22)(23,29)(24,28)(25,26)(27,31)(30,35)(32,33)(34,36)(5,7,11,10)(6,12,9,8)(15,19)(18,20)(22,26)(24,32)(27,29)(30,36)(5,8)(6,10)(7,9)(11,12)(13,15,17,19)(14,18,16,20)(21,22)(23,29)(24,28)(25,26)(27,31)(30,35)(32,33)(34,36)(1,3,4,2)(5,9,11,6)(7,12,10,8)(21,23,25,31)(22,27,26,29)(24,30,32,36)(28,34,33,35)(5,10,11,7)(6,12,9,8)(13,16,17,14)(15,20,19,18)(21,24,25,32)(22,28,26,33)(23,30,31,36)(27,34,29,35)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.