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