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