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