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