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