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