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