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