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