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