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