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