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