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