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)(12,13)(14,16)(17,18,23,26)(19,24,22,20)(21,25,31,32)(27,29,30,28)(33,34,37,41)(35,40,43,38)(36,44,46,39)(42,47,45,48)(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,14)(13,16)(17,19,23,22)(18,24,26,20)(21,27,31,30)(25,29,32,28)(33,34)(35,38)(36,39)(37,41)(40,43)(42,47)(44,46)(45,48)(2,6)(3,5)(4,12)(15,16)(17,20,23,24)(18,19,26,22)(21,29,31,28)(25,30,32,27)(33,35,37,43)(34,38,41,40)(36,45,46,42)(39,48,44,47)(1,4,7,12)(2,9,6,13)(3,11,5,14)(8,15,10,16)(17,20)(18,19)(21,29)(22,26)(23,24)(25,30)(27,32)(28,31)(33,36,37,46)(34,39,41,44)(35,42,43,45)(38,47,40,48)(1,5,7,3)(2,10,6,8)(4,11,12,14)(9,15,13,16)(17,21)(18,25)(19,27)(20,28)(22,30)(23,31)(24,29)(26,32)(33,35)(34,40)(36,45)(37,43)(38,41)(39,47)(42,46)(44,48)(1,6,7,2)(3,10,5,8)(4,13,12,9)(11,16,14,15)(17,22,23,19)(18,20,26,24)(21,30,31,27)(25,28,32,29)(33,34)(35,40)(36,39)(37,41)(38,43)(42,48)(44,46)(45,47)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.