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