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