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