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