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