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