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