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