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