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