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