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