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