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