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