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