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