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