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