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