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