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