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