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