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