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