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)(17,18,23,27)(19,26,22,21)(20,25,31,24)(28,29,30,32)(33,34,39,37)(35,42,36,40)(38,41,46,45)(43,48,44,47)(1,2,6,7)(3,4,10,9)(5,8,15,13)(11,12,16,14)(17,19,23,22)(18,21,27,26)(20,28,31,30)(24,29,25,32)(33,35,39,36)(34,40,37,42)(38,43,46,44)(41,47,45,48)(2,7)(3,10)(8,13)(11,16)(17,20,23,31)(18,24,27,25)(19,28,22,30)(21,29,26,32)(33,34,39,37)(35,40,36,42)(38,41,46,45)(43,47,44,48)(1,3,6,10)(2,4,7,9)(5,11,15,16)(8,12,13,14)(17,20)(18,25)(19,28)(21,32)(22,30)(23,31)(24,27)(26,29)(33,36,39,35)(34,40,37,42)(38,44,46,43)(41,47,45,48)(1,4)(2,3)(5,14)(6,9)(7,10)(8,16)(11,13)(12,15)(17,21)(18,19)(20,29)(22,27)(23,26)(24,28)(25,30)(31,32)(33,37,39,34)(35,42,36,40)(38,41,46,45)(43,47,44,48)(1,5,6,15)(2,8,7,13)(3,11,10,16)(4,12,9,14)(17,22,23,19)(18,26,27,21)(20,30,31,28)(24,32,25,29)(33,38)(34,41)(35,43)(36,44)(37,45)(39,46)(40,47)(42,48)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.