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