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