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