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