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