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