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