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