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