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