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