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