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