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