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