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