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