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