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