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