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