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