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