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)(19,26)(20,23)(21,29)(22,25)(24,30)(27,28)(31,32)(33,34,39,38)(35,42,37,40)(36,44,46,41)(43,47,45,48)(1,3)(2,7)(4,11)(5,13)(6,9)(8,16)(10,14)(12,15)(33,35,39,37)(34,40,38,42)(36,45,46,43)(41,48,44,47)(3,9)(7,11)(10,13)(15,16)(17,19,22,23)(18,20,25,26)(21,27,30,31)(24,28,29,32)(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)(17,18)(19,20)(21,24)(22,25)(23,26)(27,28)(29,30)(31,32)(33,36,39,46)(34,41,38,44)(35,43,37,45)(40,47,42,48)(1,3)(2,7)(4,11)(5,10)(6,9)(8,15)(12,16)(13,14)(17,20)(18,23)(19,25)(21,28)(22,26)(24,31)(27,29)(30,32)(33,37,39,35)(34,40,38,42)(36,43,46,45)(41,48,44,47)(1,5)(2,8)(3,10)(4,12)(6,14)(7,15)(9,13)(11,16)(17,21)(18,24)(19,27)(20,28)(22,30)(23,31)(25,29)(26,32)(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.