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