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