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