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