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