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