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