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