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