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