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