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