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