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