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