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