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