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