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