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