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