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)(19,24)(20,28)(21,25)(22,26)(23,30)(27,29)(31,32)(33,34)(35,38)(36,43)(37,40)(39,44)(41,45)(42,48)(46,47)(1,3)(2,5)(4,11)(6,9)(7,15)(8,12)(10,13)(14,16)(17,19)(18,21)(20,27)(22,25)(23,29)(24,26)(28,31)(30,32)(35,41)(38,45)(42,47)(46,48) involution — undirected(2,7)(3,9)(8,16)(10,11)(33,34,37,40)(35,38,41,45)(36,39,44,43)(42,46,47,48)(1,3)(2,5)(4,10)(6,9)(7,15)(8,14)(11,13)(12,16)(17,20,22,30)(18,23,26,28)(19,27,25,32)(21,29,24,31)(33,34)(35,38)(36,39)(37,40)(41,45)(42,46)(43,44)(47,48)(1,4,6,13)(2,8,7,16)(3,10,9,11)(5,14,15,12)(17,19)(18,24)(20,27)(21,26)(22,25)(23,31)(28,29)(30,32)(33,35,37,41)(34,38,40,45)(36,42,44,47)(39,46,43,48)(1,5)(2,3)(4,12)(6,15)(7,9)(8,11)(10,16)(13,14)(17,21,22,24)(18,25,26,19)(20,29,30,31)(23,32,28,27)(33,36)(34,39)(35,42)(37,44)(38,46)(40,43)(41,47)(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.