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