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