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