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