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