One vertex per element, one color per generator, with an edge from x to x·s.
(6,12)(13,16)(17,18,23,28)(19,29,32,45)(20,26,34,46)(21,36,35,25)(22,39,38,27)(24,41,43,31)(30,44,37,47)(33,48,40,42)(1,2)(3,6)(4,7)(5,8)(9,13)(10,12)(11,14)(15,16)(17,19)(18,24)(20,31)(21,37)(22,40)(23,32)(25,45)(26,42)(27,47)(28,43)(29,36)(30,35)(33,38)(34,41)(39,44)(46,48) involution — undirected(1,3)(2,6)(4,9)(5,10)(7,13)(8,12)(11,15)(14,16)(20,34)(21,35)(25,36)(26,46)(29,45)(30,37)(31,41)(42,48) involution — undirected(1,4,5,11)(2,7,8,14)(3,9,10,15)(6,13,12,16)(17,20,22,35,23,34,38,21)(18,25,27,26,28,36,39,46)(19,30,33,31,32,37,40,41)(24,42,44,45,43,48,47,29)A 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.