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