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