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