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