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