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