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