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