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