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