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