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