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