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