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