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