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