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