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