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