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