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