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