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