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