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