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