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