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