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)(17,18,23,27)(19,24,28,31)(20,25,29,30)(21,22,26,32)(33,34)(35,37)(36,45)(38,40)(39,42)(41,44)(43,47)(46,48)(2,7)(3,12)(9,13)(10,16)(17,19,23,28)(18,24,27,31)(20,21,29,26)(22,30,32,25)(33,35)(34,37)(36,46)(38,43)(39,44)(40,47)(41,42)(45,48)(2,7)(3,12)(9,13)(10,16)(19,28)(20,29)(24,31)(25,30)(33,36,39,38)(34,40,42,45)(35,43,44,46)(37,48,41,47)(1,3,6,12)(2,8,7,11)(4,10,14,16)(5,9,15,13)(17,20,23,29)(18,25,27,30)(19,21,28,26)(22,31,32,24)(33,37,39,41)(34,35,42,44)(36,47,38,48)(40,46,45,43)(1,4,6,14)(2,9,7,13)(3,10,12,16)(5,8,15,11)(17,21)(18,22)(19,29)(20,28)(23,26)(24,30)(25,31)(27,32)(33,35)(34,41)(36,43)(37,42)(38,46)(39,44)(40,47)(45,48)(1,5,6,15)(2,10,7,16)(3,13,12,9)(4,11,14,8)(17,22)(18,26)(19,30)(20,24)(21,27)(23,32)(25,28)(29,31)(33,38,39,36)(34,40,42,45)(35,43,44,46)(37,47,41,48)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.