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