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