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