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