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