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