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