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