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