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