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