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