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