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