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