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