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