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