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