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