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