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)(17,18,23,27)(19,24,28,32)(20,22,26,31)(21,30,29,25)(33,34)(35,43)(36,42)(37,47)(38,40)(39,41)(44,45)(46,48)(3,4)(5,13)(7,10)(8,15)(19,28)(21,29)(24,32)(25,30)(33,35,40,39)(34,41,38,43)(36,44,47,46)(37,45,42,48)(1,3,6,4)(2,7,9,10)(5,11,13,12)(8,14,15,16)(17,19,23,28)(18,24,27,32)(20,29,26,21)(22,25,31,30)(33,36,40,47)(34,42,38,37)(35,44,39,46)(41,48,43,45)(1,4,6,3)(2,7,9,10)(5,12,13,11)(8,14,15,16)(17,20)(18,22)(19,29)(21,28)(23,26)(24,25)(27,31)(30,32)(33,37)(34,36)(35,45)(38,47)(39,48)(40,42)(41,44)(43,46)(1,5)(2,8)(3,11)(4,12)(6,13)(7,14)(9,15)(10,16)(17,21,23,29)(18,25,27,30)(19,20,28,26)(22,24,31,32)(33,38,40,34)(35,41,39,43)(36,37,47,42)(44,48,46,45)(1,2)(3,7)(4,10)(5,8)(6,9)(11,14)(12,16)(13,15)(17,22)(18,26)(19,25)(20,27)(21,24)(23,31)(28,30)(29,32)(33,39,40,35)(34,41,38,43)(36,46,47,44)(37,45,42,48)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.