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