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