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