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