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