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