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