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