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)(21,22,27,32)(23,33,24,29)(25,35,28,30)(26,31,34,36)(5,7,10,16)(6,11,13,14)(8,15,9,18)(12,19,17,20)(21,23)(22,29)(24,27)(25,34)(26,28)(30,36)(31,35)(32,33)(2,4)(21,24,25,34,27,23,28,26)(22,29,35,36,32,33,30,31)(5,8,10,9)(6,12,13,17)(7,15,16,18)(11,19,14,20)(21,25,27,28)(22,30,32,35)(23,34,24,26)(29,36,33,31)(5,9,10,8)(6,12,13,17)(7,15,16,18)(11,20,14,19)(21,26,28,23,27,34,25,24)(22,31,30,33,32,36,35,29)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.