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