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