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)(17,18,23,22)(19,24,29,27)(20,25,30,32)(21,31,28,26)(33,34)(35,44)(36,41)(37,45)(38,46)(39,42)(40,43)(47,48)(1,3,8,7)(2,9,11,12)(4,14,5,13)(6,15,10,16)(17,18,23,22)(19,27,29,24)(20,25,30,32)(21,26,28,31)(33,35,40,42)(34,39,43,44)(36,45,47,38)(37,41,46,48)(1,4,8,5)(2,10,11,6)(3,13,7,14)(9,15,12,16)(17,19,23,29)(18,24,22,27)(20,28,30,21)(25,26,32,31)(33,36,40,47)(34,41,43,48)(35,45,42,38)(37,39,46,44)(1,5,8,4)(2,6,11,10)(3,14,7,13)(9,16,12,15)(17,20)(18,25)(19,28)(21,29)(22,32)(23,30)(24,26)(27,31)(33,37)(34,38)(35,41)(36,39)(40,46)(42,48)(43,45)(44,47)(1,6)(2,4)(3,15)(5,11)(7,16)(8,10)(9,14)(12,13)(17,21,23,28)(18,26,22,31)(19,20,29,30)(24,32,27,25)(33,38)(34,37)(35,36)(39,41)(40,45)(42,47)(43,46)(44,48)(1,7,8,3)(2,9,11,12)(4,14,5,13)(6,16,10,15)(17,22,23,18)(19,27,29,24)(20,25,30,32)(21,31,28,26)(33,39)(34,42)(35,43)(36,46)(37,47)(38,41)(40,44)(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.