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