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