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)(19,23)(20,29)(21,25)(22,26)(24,28)(27,32)(30,31)(33,34)(35,43)(36,47)(37,41)(38,42)(39,46)(40,45)(44,48) involution — undirected(1,3)(2,5)(4,11)(6,9)(7,14)(8,10)(12,16)(13,15)(17,19,22,27)(18,23,26,32)(20,21,28,31)(24,30,29,25)(33,35)(34,39)(36,44)(37,45)(38,46)(40,48)(41,47)(42,43)(4,12)(7,15)(11,16)(13,14)(19,27)(20,28)(23,32)(24,29)(33,34,38,42)(35,39,46,43)(36,40,45,47)(37,41,44,48)(1,4,6,12)(2,7,10,15)(3,11,9,16)(5,14,8,13)(17,20)(18,24)(19,21)(22,28)(23,30)(25,32)(26,29)(27,31)(33,34)(35,43)(36,40)(37,48)(38,42)(39,46)(41,44)(45,47)(1,3)(2,8)(4,11)(5,10)(6,9)(7,13)(12,16)(14,15)(17,18)(19,23)(20,24)(21,30)(22,26)(25,31)(27,32)(28,29)(33,36)(34,40)(35,44)(37,46)(38,45)(39,48)(41,43)(42,47) involution — undirected(1,5,6,8)(2,9,10,3)(4,13,12,14)(7,11,15,16)(17,21)(18,25)(19,28)(20,27)(22,31)(23,24)(26,30)(29,32)(33,37,38,44)(34,41,42,48)(35,45,46,36)(39,47,43,40)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.