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