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