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