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