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)(17,18,23,25)(19,24,27,32)(20,22,30,31)(21,29,28,26)(34,36)(37,45)(40,43)(42,46)(2,7)(5,8)(9,12)(13,15)(17,19,23,27)(18,24,25,32)(20,28,30,21)(22,26,31,29)(33,34,39,36)(35,40,38,43)(37,44,45,41)(42,48,46,47)(2,7)(3,10)(9,12)(11,16)(18,25)(19,27)(20,30)(26,29)(33,35,39,38)(34,40,36,43)(37,42,45,46)(41,47,44,48)(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,13)(14,16)(17,20)(18,22)(19,28)(21,27)(23,30)(24,26)(25,31)(29,32)(33,36,39,34)(35,40,38,43)(37,44,45,41)(42,47,46,48)(1,4,6,14)(2,9,7,12)(3,11,10,16)(5,13,8,15)(17,21,23,28)(18,26,25,29)(19,20,27,30)(22,24,31,32)(33,37)(34,41)(35,42)(36,44)(38,46)(39,45)(40,47)(43,48)(1,5,6,8)(2,3,7,10)(4,13,14,15)(9,11,12,16)(17,22)(18,20)(19,29)(21,24)(23,31)(25,30)(26,27)(28,32)(33,38,39,35)(34,40,36,43)(37,46,45,42)(41,47,44,48)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.