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