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