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