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