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