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