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