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