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