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