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