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