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