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