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